package com.smartwork.common.mobile.wechat.util;

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;
import com.smartwork.common.mobile.wechat.bean.AccessToken;
import com.smartwork.common.mobile.wechat.bean.JsapiTicket;
import com.smartwork.common.mobile.wechat.constant.StaticValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import java.util.concurrent.ConcurrentHashMap;

public class WeixinUtil {
	
    private static Logger logger = LoggerFactory.getLogger(WeixinUtil.class);

    private static ConcurrentHashMap<String, AccessToken>  accessMap = new ConcurrentHashMap<String, AccessToken>();

	/**
	 * 获取access_token
	 * 
	 * @return
	 */
	public static AccessToken getAccessToken(String groupId) {
        String[] app = WeixinConfUtils.getAppIDAndAppSecretByGroupId(groupId);
		String requestUrl = String.format(StaticValue.getTokenUrl, app[0], app[1]);
        logger.debug("requestUrl={}", requestUrl);
		JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
		AccessToken accessToken = null;
		// 如果请求成功
		if (null != jsonObject) {
			try {
				accessToken = new AccessToken();
				accessToken.setToken(jsonObject.getString("access_token"));
				accessToken.setExpiresIn(jsonObject.getIntValue("expires_in"));
                logger.info("获取access_token成功，有效时长{}秒 token:{}", accessToken.getExpiresIn(), accessToken.getToken());
                accessMap.put(groupId, accessToken);
			} catch (JSONException e) {
				accessToken = null;
				// 获取token失败
                logger.error("获取token失败 errcode:{} errmsg:{}",
							jsonObject.getIntValue("errcode"),
							jsonObject.getString("errmsg"));
			}
		}
		return accessToken;
	}
	
	/**
	 * 获取access_token
	 * 
	 * @return
	 */
	public static JsapiTicket getJsapiTicket(String accessToken) {
		String requestUrl = String.format(StaticValue.jsApiTicketFetch, accessToken);
		JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
		JsapiTicket jsapiTicket = null;
		// 如果请求成功
		if (null != jsonObject) {
			try {
				jsapiTicket = new JsapiTicket();
				jsapiTicket.setTicket(jsonObject.getString("ticket"));
				jsapiTicket.setExpiresIn(jsonObject.getIntValue("expires_in"));
                logger.info("获取jsapiTicket成功，有效时长{}秒 token:{}", jsapiTicket.getExpiresIn(), jsapiTicket.getTicket());
				
			} catch (JSONException e) {
				jsapiTicket = null;
				// 获取token失败
                logger.error("获取token失败 errcode:{} errmsg:{}",
							jsonObject.getIntValue("errcode"),
							jsonObject.getString("errmsg"));
			}
		}
		return jsapiTicket;
	}
	
	
	
	

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl
	 *            请求地址
	 * @param requestMethod
	 *            请求方式（GET、POST）
	 * @param outputStr
	 *            提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpRequest(String requestUrl,	String requestMethod, String outputStr) {
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		try {
			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			// URL url = new URL(requestUrl);
            URL url = new URL(null,requestUrl,new sun.net.www.protocol.https.Handler());
            System.out.println("==============发送的url"+url+"===============");
			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url
					.openConnection();

            System.out.println("============== url.openConnection()"+httpUrlConn+"===============");
			httpUrlConn.setSSLSocketFactory(ssf);

			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);
			// 设置请求方式（GET/POST）
			httpUrlConn.setRequestMethod(requestMethod);

			if ("GET".equalsIgnoreCase(requestMethod))
				httpUrlConn.connect();

			// 当有数据需要提交时
			if (null != outputStr) {
				OutputStream outputStream = httpUrlConn.getOutputStream();
				// 注意编码格式，防止中文乱码
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}

			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(
					inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

			String str = null;
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
            System.out.println("============== buffer.toString()"+buffer.toString()+"===============");
			bufferedReader.close();
			inputStreamReader.close();
			// 释放资源
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			jsonObject = JSONObject.parseObject(buffer.toString());
            System.out.println("============== jsonObject"+jsonObject+"===============");
		} catch (ConnectException ce) {
			logger.error("Weixin server connection timed out.");
            System.out.println("============== Weixin server connection timed out."+ce+"===============");
		} catch (Exception e) {
            logger.error("https request error:{}", e);
            System.out.println("==============https request error:{}"+e+"===============");
		}
		return jsonObject;
	}
}
